Gas-burner.



E. G. VAN ZANDT.

GAS BURNER.

APPLIGATION I'ILBD JULY 11,1910.

Patented Nov. 26, 1912.

3 SHEETS-SHEET 1.

a o T u m H 4 s A W m c H F A R E. G'. VAN ZANDT.

E. G. VAN ZANDT. GAS BURNER. 11111111111111111111111111 0.

1,045,464. Patented Nov. 26, 1912.

' 3 sn: TTTTTTTTT 3.

UNTTED STATE$ PATENT @FFTCE EDWIN G. VAN ZAND'I', OF ST. LOUIS, MISSOURI, ASSIGNOR TO VAN ZANDT G-AS APPLIANCE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

GAS-BURNER.

Specification of Letters Patent.

Patented Nov. 26, 1912.

To ,all whom it may concern:

a citizen of the United States of America, resi'ding in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in GaS-Burners, of which the following is a specification.

This invention relates to gas-burners.

More particularly it relates to improvements in the structure shown in the U. S. Letters Patent No. 838,596 dated Dec. 18, 1906, and U. S. Letters Patent No. 876,507, dated Jan. 14:, 1908.

The principal Object of this invention is to provide an improved gas-burner in which the conbustion of the gas will be practically complete. To acconiplish this I have provided a gas-burner having an elongated shell surrounding the initial burner, ,with an Opening in its top of substantially its entire area and covered over with a curved perforated plate.

A further Object is to provide an improved top-plate detachable from the shell and having a plurality of openings, of substantially the same size and of such a size as to permit the gradual egress of gases from said burner but to so retard the flow thereof that the gases are caused to burn at the eXterio-r of the plate. -Also to provide an improved means for holding the elongated shell over the init-ial burner and a novel means for holding the curved plate over the shell.

A further Object is to provide the shell or container with an ignition Opening whereby the ignition of the burner may be readily effected and lastly one of the objects of the invention is to provide a shell or container with openings of varying diameters to increase the retardation of the products of combustion and facilitate their burning at the top of the plate at the eXterior of the shell.

In the accompanying drawings, Figure 1 is a top plan view of the burner, part being broken away, Fig. 2 is afront view of the burner partly in elevation and partly in longitudinal section, Fig 3 is a Central, transverse, vertical sectional view of the shell and plate, Fig. 1 isa fragmental top plan view of the 'plate, on an enlarged scale, showing the perforations of the plate,

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 4, Fig. 6 is a Central, longitudi- V nal, vertical sectional view of a modification Be it known that I, EDWIN G. VAN ZANDT, i

of the shell and plate, Fig. 7 is a front view of a second modification of the shell and plate partly in longitudinal vertical section showing the igniting means and ends of varying diameters, and Fig. 8 is a vertical,

' transverse section of the same.

Similar letters of reference indicate ,corresponding parts throughout the several figures of the drawing.

Referring to the drawings, and more particularly Figs. 1 to 6, the shell or Container 10 is cylindrical in shape and has inwardly projecting flanges 11 forming restricted end openings 12. The lower part of the shell is provided with a clownwardly projecting cylindrical flange 13 having at the lower edge of its inner face an annular recess 14 adapted to receive the upper ends of the legs 15 of a bracket or inverted tripod 16 mcunted upon the inlet pipe 17. The upper end of one of said legs 15 is provided with an :upwardly projecting lug 18 engaging in a downwardly Opening recess 19, shown most clearly in Fig. 3.* Upon the pipe 17 is nounted the usual niXer 20 communicating with the initial burner 21. The upper part of the shell 10 is almost entirely open, that is, the shell is provided with an Opening in its top of substantially its entire area the said Opening being provided with approximately radial side faces 22 and vertical end faces 23 slightly offset from the inner faces of the flanges 11 thereby forming an upwardly disposed shoulder 24. The top plate 25 is upwardly curved to form a segment of a cylinder without side flanges but having vertical downwardly projecting end flanges 26 adapted to contact said faces 23 and lie upon the upwardly disposed shoulders 24. The said downwardly projecting fian-ges `are provided with downwardly opening recesses 27 `adapted to snugly receive studs 28 projecting from said faces 23, whereby said plate 25 is held against lateral displacement, the faces 23 holding the same 'against cndwise displacement. The flanges fit closely against the shell, in such a manner 'as to prevent a passage of gases therebetween. The plate 25 is provided with a plurality of angularly shaped restricted openings 29 having roughened beveled edges 30 outwardly fiaring, whereby the cross-section 'of said openi ngs is approXimately V-shaped,

the various openings being substantially of the plate 25 extend beyond and are spaced V 7.

above said approximately radial faces 22, whereby are formed longitudinal side-openings 31, shown clearly in F ig. 3.

The modified form of burner illustrated in Fig. 6 has the plate 25 much shorter as shown by the plate 25' than the distance between the inner faces of the flanges 11, but

is otherwise substantially the same in construction, having a shell TO', fiange 11',

opening 12', lower cylindrcal flange 13',`

end faces 23, lugs 28', and openings 29' In F igs. 7 and 8 is shown a structure like that shown in Figs. 1 to 5, though the plate used does not necessarily extend the' full' length of the shell since it could be made like :the plate shown in F ig. 6. The front of the shell of the structure shown in F ig. 7 is provided with a slot 43 and in front of I the slot is arranged a shelf-like project ion 44: having a curved upper face 45, the Ob ect of the shelf being to support a burningj match or taper. This arrangement permits` the ignition of the burner by the user simply' e-` and aids greatly toward proper combustion. fore the turning on of the supply gas. The,

placing a burning match on the shelf match thus placed being in proximity to the upper part of the heater and initial burner: 21 therein, enables the heater to be readily ignited without any explosion or noise. The position of the shelf and slot is such as to enable the ignition to take 'place without,

noise and immediately.

In the structures shown in Figs. 1 to 6, the ends of the shell are restricted so as to retard the outflow of unignited products of combustion at the ends, and to enable such retarded products of combustion to be treated in the shell and when passing out of the shell at the detachable top-plate to be' burned at the exterior thereof. To secure such retardation and the necessary and proper re-heating of the products of com-- ustion before their emission from the shell, the ends of the shell are provided with a double restriction, that is, an end Opening 40 formed by a. flange of different diameters one step 42 of smaller diameter than the other step 41. This step-like passage prevents the outward flow of the products of combustion and Subjects such as are retarded thereby to varying temperature and atmospherie conditions. The heating of the The operation of the burner is as follows: The miXer 20 having been properly adjusted the gas is allowed to flow, until it is possible to ignite the 'sam-e by placing a lighted match at or into some one of the shown in Figs. 7 and 8 by placing such lighted match on the shelf 44. The gas'flowing from the initial burner 21 is thereby ig'nited and the initial burning takes place. The products of combustion of the initial burner pass through the openings'29 in an unignited state, before doing so being heated, and these openings being restricted in the manner indicated, they form burner openings fo-r the gases passing therethrough,

which are burned at the exterior of the plate. The openings 29 are not enough restricted to force the unburned gases out at the end openings, but are so restricted as to ,cause the proper ccmbustion of all the prod- By my mprovements a burner is produced which, when in use, is readily ignited and simple in operation, free from noise and from ignited gases passing out at the ends of the shell, and'gives almost perfect combustio n. The burner, being composed of detachable parts, is cheaply manufactured and easily examined and repaired.

The invention, therefore, consists of an improved gas-burner co mprising a shell or container having a detachable top-plate provided with a plurality of openings. And the invention consists further of a. gas-burner comprising a shell having restricted open ends and a top Opening having a plate with a plurality of openings therein so arranged as to permit the graclual egress of gases from said burner but to so retard the flow thereof that the gases are caused to burn at the exterior of the plate, said openings forming burner openings. And the invention consists further in the specific attaching means of the plate to the shell, and further in the attaching means of the shell to its support. And the invention consists further in a shell having a plurality of fianges at its ends forming restricted end' openings of varying diameters. And the invention consists furtherin the improved igniting slot and shelf.

I do not wish to limit myself to the spe-'` o-penings of the plate, and in the structure Having thus desoribed my invention, I Claim as new and desire to secure by Letters Patent:

1. In a gas burner having an initial burner, a shell or container surrounding said burner, having an Opening in its top free to the atmosphere, and a detachable burner plate for said Opening provided with a plurality of openings said plate being SO arranged that the gases are caused to burn at the exterior of the plate, said 'openings forming burner openings for the gases passing therethrongh.

2. In a gas-bnrner having an initial burner, an elongated shell surrounding said burner, having an Opening in its top, said Opening being substantially the entire area of said top, and a plate disposed over said top and joining said shell at the opposite ends of the Opening, said plate being spaced from the sides of the Opening and having a plnrality of burner openings.

3. In a gas-burner having an initial burner, a cylindrical shell surrounding the initial burner having end fianges forming end openings and having an open top, and a perforated plate disposed over said open top and spaced from the side edges of t-he open top.

4:. In a gas-burner having an initial bnrner, a shell or container having open ends surrounding the initial bnrner, said open ends' being provided with stepped fianges forming end openings of varying dameters.

5. In a gas-burner having an initial burner, a shell surrounding said initial burner having inwardly-fianged end openings and an open top, shoulders at the ends of the open top, a lug projecting from each of the ends, and a curved perforated plate disposed over the open top, having downwardly-extending flanges at the ends of the Curved plate contaoting with said shoulders, said flanges having reoesses adapted to receive said lugs.

6. In a gas burner, a plate having closely adjacent openings of substantially triangular shape, and having sharp roughened inner edges, the sides of the walls forming the openings being beveled.

7. In a gas-burner having an initial burner, a shell with an open top surrounding said initial burner, and a detachable plate on the shell over said top, having restricted openings, so arranged as to permit the gradual egress of gases from said burner but to so retard the flow thereof that the gases are caused to burn at the exterior ,of the plate, said openings forming burner openings for the gases passing therethrough.

8. In a gas-burner, a shell having a downwardly-projecting cylindrical fiange having an internal shonldered annular recess and an additional recess comnunicating with the annular recess, a support `for engaging the annnlar recess, and a lug on the support engaging the additional reoess.

9. In a gas-burner having an initial burner, a shell or Container surrounding the same, said shell or Container having a slot in proximity to the burner and a shelf-like projection adjacent the slot.

10. In a gas-burner having an initial bnrner, a shell or Container surrounding the same having an Opening at the top substantially the width of the shell, and having a slot at the upper part of the shell and communioating with the Opening of the shell. a In testimony, that I Claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

EDWVIN G. VAN ZANDT.

Witnesses:

LoUIs BLUM, LENA WIDRIG.

Copies of this patent may be obtained for five cents eah, by addressing the Gommissioner of.Patents, Washington, D. G." 

